/*
 * Copyright 2015 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.cloud.stream.module.metrics;

import java.util.Collection;

/**
 * Contains operations to find FieldValueCounters.
 *
 * @author Eric Bottard
 */
public interface FieldValueCounterReader {

	/**
	 * Retrieve a single counter by name.
	 */
	FieldValueCounter findOne(String name);

	/**
	 * List the names of all available counters.
	 */
	Collection<String> list();
}
